T-Mobile has opened a teaser page for the forthcoming successor to the Samsung Vibrant Galaxy S Android smartphone in the rebranded Samsung Galaxy S 4G.

The Galaxy S 4G will feature support for T-Mobile’s nascent HSPA+ 4G network, a slight redesign from the Vibrant and ship with Android 2.2, while the predecessor Vibrant has finally received its long promised update. According to the latest documentation, the phone will be launched next February 23rd.